1. Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina-Chapel Hill, Chapel Hill, North Carolina.
2. College of Education and Human Ecology, Department of Human Development and Family Science, The Ohio State University, Columbus, Ohio.
3. Student Wellness Center, The Ohio State University, Columbus, Ohio.
4. College of Public Health, Division of Health Behavior/Health Promotion, The Ohio State University, Columbus, Ohio.